1Blurb:: 2Use sub-sampled tensor-product quadrature points to build a polynomial chaos expansion. 3Description:: 4Tthe collocation grid is defined using a subset of tensor-product quadrature points: the order of the tensor-product grid is selected as one more than the expansion order in each dimension (to avoid sampling at roots of the basis polynomials) and then the tensor multi-index is uniformly sampled to generate a non-repeated subset of tensor quadrature points. 5Topics:: 6Examples:: 7Theory:: 8Faq:: 9See_Also:: 10